class_docstr: Test class for AthenaClient
docstr: Athena - Drop All Tables, Success
docstr_tok: ["Athena","-","Drop","All","Tables",",","Success"]
code: def test_drop_all_tables(self, drop_table_mock):
      """Athena - Drop All Tables, Success"""
      self.client._client.results = [
          {"Data": [{"VarCharValue": "table_01"}]},
          {"Data": [{"VarCharValue": "table_02"}]},
          {"Data": [{"VarCharValue": "table_02"}]},
      ]
      assert_true(self.client.drop_all_tables())
      assert_equal(drop_table_mock.call_count, 2)
  
imports: from datetime import datetime
  import os
  from mock import Mock, patch
  from nose.tools import assert_equal, assert_false, assert_count_equal, assert_raises, assert_true, raises
  from streamalert.shared.athena import AthenaClient, AthenaQueryExecutionError
  from streamalert.shared.config import load_config
  from tests.unit.helpers.aws_mocks import MockAthenaClient
label_desc: Use image node_id 12 for calling the TestAthenaClient obj's underlying member method code with example usage: obj.test_drop_all_tables(drop_table_mock) without return types